loongson/pypi: links for census-downloader

loongson/mirror census-downloader-1.3.0.tar.gz
loongson/mirror census-downloader-1.2.0.tar.gz
loongson/mirror census-downloader-1.1.0.tar.gz
loongson/mirror census-downloader-1.0.2.tar.gz
loongson/mirror census-downloader-1.0.1.tar.gz
loongson/mirror census-downloader-1.0.0.tar.gz